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BOSTON MARATHON 2023

Erin Mazman

Bib: 26642•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
11:20/mi
35:14
↑ 97↓ 3451.5%
10K· 6.21 mi
11:30/mi
1:10:58
↑ 79↓ 1380.4%
15K· 9.32 mi
11:02/mi
1:45:14
↑ 67↓ 78
20K· 12.43 mi
12:15/mi
2:23:19
↑ 106↓ 860.1%
Half· 13.11 mi
11:52/mi
2:31:25
↑ 19↓ 370.5%
25K· 15.53 mi
12:53/mi
3:02:38
↑ 66↓ 880.2%
30K· 18.64 mi
13:29/mi
3:44:31
↑ 181↓ 1480.2%
20M
13:23/mi
4:02:42
↑ 64↓ 500.2%
21M
12:45/mi
4:15:27
↑ 106↓ 241.6%
35K· 21.75 mi
13:19/mi
4:25:25
↑ 17↓ 861.7%
23M
12:23/mi
4:40:55
↑ 23↓ 630.6%
24M
11:42/mi
4:52:37
↓ 821.3%
40K· 24.85 mi
11:59/mi
5:02:52
↓ 200.3%
25.2M
12:34/mi
5:07:12
↑ 13↓ 160.2%
Finish· 26.22 mi
11:32/mi
5:18:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:31:25
Pace11:33 /mi
2nd Half
Distance13.11 mi
Time2:47:32
Pace12:47 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:0135:1411:2035:14
11:20
-
10K
6.21 mi12:28:451:10:5811:2535:44
11:30
+0:10
15K
9.32 mi13:03:011:45:1411:1734:16
11:02
-0:28
20K
12.43 mi13:41:062:23:1911:3238:05
12:15
+1:13
Half
13.11 mi13:49:122:31:2511:338:06
11:52
-0:23
25K
15.53 mi14:20:253:02:3811:4531:13
12:53
+1:01
30K
18.64 mi15:02:183:44:3112:0341:53
13:29
+0:36
20M
20.00 mi15:20:294:02:4212:0818:11
13:23
-0:06
21M
21.00 mi15:33:144:15:2712:1012:45
12:45
-0:38
35K
21.75 mi15:43:124:25:2512:129:58
13:19
+0:34
23M
23.00 mi15:58:424:40:5512:1315:30
12:23
-0:56
24M
24.00 mi16:10:244:52:3712:1211:42
11:42
-0:41
40K
24.85 mi16:20:395:02:5212:1110:15
11:59
+0:17
25.2M
25.20 mi16:24:595:07:1212:114:20
12:34
+0:35
Finish
26.22 mi16:36:445:18:5712:1011:45
11:32
-1:02

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

11:02 /mi

Average Pace

12:10 /mi

Slowest Pace

13:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:47

43% of race

Time at Steady Pace

1:08:10

21% of race

Time at Slower Pace

1:54:00

36% of race

Average Pace: 12:10 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:53:0135:1411:2035:14
11:20
#26083
10K
6.21 mi12:28:451:10:5811:2535:44
11:30
#26039
15K
9.32 mi13:03:011:45:1411:1734:16
11:02
#25791
20K
12.43 mi13:41:062:23:1911:3238:05
12:15
#25829
Half
13.11 mi13:49:122:31:2511:338:06
11:52
#25831
25K
15.53 mi14:20:253:02:3811:4531:13
12:53
#25829
30K
18.64 mi15:02:183:44:3112:0341:53
13:29
#25825
20M
20.00 mi15:20:294:02:4212:0818:11
13:23
#25800
21M
21.00 mi15:33:144:15:2712:1012:45
12:45
#25726
35K
21.75 mi15:43:124:25:2512:129:58
13:19
#25738
23M
23.00 mi15:58:424:40:5512:1315:30
12:23
#25690
24M
24.00 mi16:10:244:52:3712:1211:42
11:42
#25648
40K
24.85 mi16:20:395:02:5212:1110:15
11:59
#25595
25.2M
25.20 mi16:24:595:07:1212:114:20
12:34
#25576
Finish
26.22 mi16:36:445:18:5712:1011:45
11:32
#25555
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi26083110981109825222(Top 95%)10583(Top 93%)10583(Top 582%)
10K6.21 mi3.10 mi26039+4411067+3111067+3125960(Top 98%)11015(Top 96%)11015(Top 606%)
15K9.32 mi3.11 mi25791+24810906+16110906+16125222(Top 95%)10583(Top 93%)10583(Top 582%)
20K12.43 mi3.11 mi25829-3810939-3310939-3325814(Top 97%)10948(Top 96%)10948(Top 603%)
Half13.11 mi0.68 mi25831-210941-210941-225790(Top 97%)10947(Top 96%)10947(Top 602%)
25K15.53 mi2.42 mi25829+210945-410945-425797(Top 97%)10961(Top 96%)10961(Top 603%)
30K18.64 mi3.11 mi25825+410952-710952-725736(Top 97%)10965(Top 96%)10965(Top 603%)
20M20.00 mi1.36 mi25800+2510946+610946+625466(Top 96%)10838(Top 95%)10838(Top 596%)
21M21.00 mi1.00 mi25726+7410907+3910907+3923775(Top 89%)9973(Top 87%)9973(Top 549%)
35K21.75 mi0.75 mi25738-1210914-710914-725774(Top 97%)11031(Top 97%)11031(Top 607%)
23M23.00 mi1.25 mi25690+4810893+2110893+2124469(Top 92%)10374(Top 91%)10374(Top 571%)
24M24.00 mi1.00 mi25648+4210874+1910874+1924144(Top 91%)10245(Top 90%)10245(Top 564%)
40K24.85 mi0.85 mi25595+5310850+2410850+2423891(Top 90%)10130(Top 89%)10130(Top 558%)
25.2M25.20 mi0.35 mi25576+1910844+610844+623414(Top 88%)9896(Top 87%)9896(Top 545%)
Finish26.22 mi1.02 mi25555+2110840+410840+424716(Top 93%)10517(Top 92%)10517(Top 579%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

25222

Females

10583

F45-49

10583

5K→10K

3.1 - 6.2 mi

Top 98%
×5story building
+79ft-138ft

Overall

25960

Females

11015

F45-49

11015

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

25222

Females

10583

F45-49

10583

15K→20K

9.3 - 12.4 mi

Top 97%
×5story building
+106ft-86ft

Overall

25814

Females

10948

F45-49

10948

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

25790

Females

10947

F45-49

10947

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

25797

Females

10961

F45-49

10961

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

25736

Females

10965

F45-49

10965

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

25466

Females

10838

F45-49

10838

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

23775

Females

9973

F45-49

9973

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

25774

Females

11031

F45-49

11031

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

24469

Females

10374

F45-49

10374

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

24144

Females

10245

F45-49

10245

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23891

Females

10130

F45-49

10130

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23414

Females

9896

F45-49

9896

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

24716

Females

10517

F45-49

10517

Passing Analysis

Category:
Athletes Passed
853
Passed By
325
Net Change
+528
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26083
5K → 10K10864+44#26083#26039
10K → 15K2535+248#26039#25791
15K → 20K5896-38#25791#25829
20K → Half911-2#25829#25831
Half → 25K4341+2#25831#25829
25K → 30K5046+4#25829#25825
30K → 20M4318+25#25825#25800
20M → 21M762+74#25800#25726
21M → 35K1123-12#25726#25738
35K → 23M502+48#25738#25690
23M → 24M486+42#25690#25648
24M → 40K530+53#25648#25595
40K → 25.2M190+19#25595#25576
25.2M → Finish3211+21#25576#25555
TOTALS853325+528
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing